Do you live in a DOS window, and use ClearType? Microsoft has made the Consolas font, previously only available in Vista and a few products, available for earlier versions of Windows. Looks very nice. Instructions for getting it working here — it requires a registry hack. And like many things in Windows, it only works after a reboot.
(One font = 4.3 Mb download?! Aye carumba! Check first if you already have the font; it comes with some versions of Office and Visual Studio. And why do they give so many setup programs meaningless filenames like setup.exe?!)